Synthesis and Mechanical Properties of Advanced Polyimide/Silicon Dioxide Nanocomposites

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Hybrid inorganic-organic materials based on a polyimide (PI) and silicon dioxide (SiO2) were prepared previously only via sol-gel approach. However, sol-gel processes have some critical limitations. The primary drawback is that the resultant gel is extremely fragile and sol-gel process is complicated and costly. In this study, using SiO2 nanoparticles polyimide/SiO2 nanocomposites were synthesized from 4,4'-diaminodiphenyl ether (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA). A coupling agent, 3-glycidyloxyporpl trimethoxysilane (GTMOS), was used to functionalize the SiO2 nanoparticles which enhanced the compatibility between polyimide and SiO2 nanoparticles. The microstructures of polyimide/SiO2 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR) and wide angle X-ray diffraction (WAXD). All the polyimides show typical noncrystalline X-ray diffraction. The frequent occurrence of particular interatomic distances (R) denoted by the noncrystalline WAXD maxima were determined. All the modulus, strength and fracture strain of polyimide were improved with 5 wt% SiO2 modified with the coupling agent.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

709-712

DOI:

10.4028/www.scientific.net/MSF.561-565.709

Citation:

Q. X. Zhang et al., "Synthesis and Mechanical Properties of Advanced Polyimide/Silicon Dioxide Nanocomposites", Materials Science Forum, Vols. 561-565, pp. 709-712, 2007

Online since:

October 2007

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Price:

$35.00

[1] A. Kioul and L. Mascia: J. Non-Crystalline Solids. Vol. 175 (1994), p.169.

[2] J. Wen and G. Wilkes: Chem. Mater. Vol. 8 (1996), p.1667.

[3] Y. Huang and Y. Gu: J. Appl. Polym. Sci. Vol. 88 (2003), p.2210.

[4] H.P. Klug, and L.E. Alexander: X-ray Diffraction Procedures, for Polycrystalline and Amorphous Materials ( John Wiley & Sons, New York 1954).

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